212911271 has 2 divisors, whose sum is σ = 212911272. Its totient is φ = 212911270.

The previous prime is 212911267. The next prime is 212911297. The reversal of 212911271 is 172119212.

It is an a-pointer prime, because the next prime (212911297) can be obtained adding 212911271 to its sum of digits (26).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212911271 - 2² = 212911267 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212911271.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212911201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106455635 + 106455636.

It is an arithmetic number, because the mean of its divisors is an integer number (106455636).

Almost surely, 2^212911271 is an apocalyptic number.

212911271 is a deficient number, since it is larger than the sum of its proper divisors (1).

212911271 is an equidigital number, since it uses as much as digits as its factorization.

212911271 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 504, while the sum is 26.

The square root of 212911271 is about 14591.4793972373. The cubic root of 212911271 is about 597.1263243609.

The spelling of 212911271 in words is "two hundred twelve million, nine hundred eleven thousand, two hundred seventy-one".